Railway-car underframe.



H. M. PFLAGER. I RAILWAY GAR UNDERFRAME.

APPLICATION rILED umn, 191s.

Patented July 8, 1913.

fix.-

UNITED STATES ATENT OFFICE.

BY M. PFLAGER, OF ST. LOUIS, MISSOURI, ASSIGNOR T0 TRANSGM DRAFT GEAR COMPANYLOF ST. LOUIS, MISSOURI, A CORPORATION OF DELAWARE.

RAILWAY-CAB UNDERFBAME.

aecomo.

Specification of Letters Patent.

Patented July 8, 1913.

Tg all whom-it may concern Be it known that I, HARRY M. Prinsen, a citizen of the United States, residing at city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Railway- Car Under-frames, of which the. following is a full, clear, and eX- act description, such as will enable others skilled in the art to which it appertains to mali@ and use the same, reference being had t0 the accompanying drawings, forming part of this specification, in which- Y .Figure l is a plan view of a portion of a.

' ingr drawings, 10 designates a bolster which railway car underfraine of my improved construction, and showing the draft gear associated therewith. Fig. 2 is a Sectional View taken approximately on the line 2*2 of Fig. l, and showing parts of the body bolster' and the draft gear in elevation. Fig. 3 is a longitudinal sectional view taken approxiinately on the line 3--3 of Fig. 1. Fig. '.4 is a horizontal section taken approximately on the line 4--4 of Fig. 2 with the draft gear shown'in dotted lines.

My invention relates'generally to new and useful improvements in metal underframes for railway cars of the type shown in Patents No. 916,586, dated March 30, 1909 and No. 926,074, dated June 22, 1909, both issued to me.

Bly present' invention relates particularly to steel underfraines having a single center sill, to the construction and manner of attacliingr the body holsters to the endstheicof, and to the draft gear which is opera` tively associated with the holsters and ends of the single center sill.

The principal object of my invention is to construct and attach the body holsters of the underframe to the center sill in such a inanrner as. to form a very strong, rigid and coinpact strneturc whereby the stresses of the draft gear are transmitted directly to the ,blster and are distributed therefrom to the various paris of the underfrarne, particularly the single eentersill.

l .In the construct-ion of certain types of steel underframes it is the present practice to.` use ,a single center sill of substantially I -beam shape either formed in a single piece v br of built-up construction, and it is one of the Qgirposes of my invention to provide and claimed.

Referring by numerals to the accompanyis preferably formed in a single piece by casting and substantially of I-bearn shape in, cross section. ,Formed through the center of the bolster is a vertically disposed king-bolt opening 11. and formed on the front side of the vertical web of the bolster is a pair ot buthng' spring pockets 12. Formed on the rear side of the web of the bolster to the sides of the king pin opening is a pair of draft spring pockets 1.3. Formed integral with the central portion of the bolster between these pockets is a pair of rearwardly projecting, vertically disposed walls or web plates 14., the saine being spaced a' suiieient distancefapart to accommodate' the vertical web of the center sill 15. This center sill is ordinarily in the form of an I-beani, und the top and bottom flanges thereof are engaged by flanges i6 which are formed integral with the upper and lower edges of the web plates 14. Bols-ters thus constructed are rigidly fixed to the ends of the center sill, preferably by means of rivets 17 which pass through the vertical Webs or plates 14 and the interposed web of the center sill, and also by means of rivets 17 which pass through a pair of the flanges 16 and the corresponding flanges of said center sill.

The ends of the bolster 10 are attached to the side sills 18 of the underframc in any suitable manner, and secured to brackets 19 which projecttorwardly from the holsteiare the ends of braces or sill members 20 which extend to the end sill of the underframe.

The transom draft gear associated with my improvedunderframe comprises a draww formed a pair of butiing spring pockets 22, which, when the draft gear is properly positioned on the underframe, lie immediately of yokes 24 which extend through suitable openings 25 formed in the vertical web of the bolster 10, and formed in the rear ends -of these yokes are dra-ft spring pockets 26 which are normally positioned directly behind the pockets 13.

The usual draft springs 27 are positioned in the pockets 13 and 26.

It will be noted that in my improved construction the ends of the center sill are directly connected to the central port-ions of the bolsters, and thus a very strong, rigid construction is provided wherein all stresses of the transom draft gear are transmitted directly to the bolster and from thence to the longitudinally disposed underframe members, and particularly the single center sill.

In the drawings I have shown the bolster provided with only one pair of plates 14, the same receiving the end of a single center sill, but it will be readily understood that two or more sills may be connected to the bodyv bolster by, duplicating the pairs of plates or brackets 1-4.

It will be readily understood that minor changes in the size, form and construction of the various parts of my improved underframe can be made and substituted for those herein shown and described without de-parting from the spirit of my invention, the

scope of which is set forth in the appended claims.

I claim:

1. In a car underframe, a body bolster cast in a single piece, and a pair of vertically disposed plates formed integral therewith and extending at right angles therefrom, which plates are adapted to receive a vportion of one of the sills of the car underframe.

2. In a car underframe having a single center sill` a. bolster having a pair of integral, vertically disposed plates adapted to receive the web portion of the center sill, and fastening means seated in said plates and the interposed portion of the center sill.

3. In a car underframe, an I-beam center sill, a bolster, a pair of vertically disposed web plates integral with the bolster and adapted to engage the web of the I-beam center sill, and fastening means seated in said plates and the web 'of the center sill.

4. In a car underframe, an I-'beam center sill, a bolster having a pair of integral brackets adapted to engage the web and flanges of the center sill, and fastening means seated insaid plates and the web and flanges of the center sill.

5. In a car underframe, a bolster having a pair of integral plates spaced apart a suflicient distance to receive the web of the underframe center Sill.

6. In a car underframe a bolster having "a pair of' integral plates spaced apart a sutlicient dist-ance to receive the web of t-he underframe center sill, and flanges on said plates, which flanges are adapted lo engage the flanges of the center sill.

7. In a car underframe a bolster provided on its fro-nt and rear sides with spring pockets, and a pair of web plates integral with said bolster for receiving a part of the underframe center sill.

8. In a car underframe, the combination with an I-beam center sill, of a bolster having projecting portions rigidly fixed to the web and flanges of said center sill, and a transom draft gear operatively associated with said bolster.

9. In a car underframe, a body bolster cast in a single piece and provided with an integral slotted bracket adapted to receive a part of the underframecenter sill.

10. In a car underframe, a body bolster cast in a single piece and having an inte al bifurcated extension on one side adaptedr re eive a portion of the underframe center sil with a center sill having a centrally arranged web, of a body bolster having a slot-` ted extension adapted to receive thel end portion of the web of the center sill.

12. In a ear underframe, the combination with a center sill havinf a centrally arranged web, of a body bolster having aisl'ottediextension adapted to receive the end portion of the web of the center sill, and flanges on said slotted extension adapted to engage parts of the center sill.

13. In a car underframe, the combination with a center sill having'v a web, of a body 11. In a car underframe,the combination bolster and an extension integral therewith, y

pockets, and a slotted extension integral with said bolster for lreceiving a part of the underrame center sill.

l5. In a car underframe, the combination 4with a center sill having a cent-rally ar ranged web, of'bolsters arranged at each end of said center sill, slotted extensions integral with the bolster and engaging the web of the center sill, and a transom draft gear operatively associated with each bolster.

16. In a car underframe, the combination with a center sill having a centrally arranged web, of bolsters arranged at each end of said center sill, slotted extensions in- In testimony whereof I hereunto alix my tegral with the bolster and engaging the signature 1n the presence of two Witnesses, Web of the center sill, fastening means seatthis 6th day of Jan., 1913.

ed in the slotted extensions and the inter- HARRY M. PFLAGER. posed portions of the web of the center sill, Witnesses: and a transom draft gear operatively asso- HAL C. BELLVILLE,

ciated with each bolster. l FRED H. BLANKENHORN. 

